Moderate
Weathering of gabbros gives_____________________?
Correct answer: B. Clay and iron oxide
- A. Sand and clay
- B. Clay and iron oxide
- C. Clay and Mg oxides
- D. Sand and iron oxide
Explanation
Gabbro is a dark, magnesium- and iron-rich rock; weathering commonly produces clay minerals and iron oxides from its ferromagnesian minerals. This distinguishes it from the more silica-rich weathering products associated with many felsic rocks.
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